@article{GDZPPN00204112X,
title = {D'Alembert's equation and spherical functions.},
journal = {Aequationes mathematicae},
volume = {47},
year = {1994},
pages = {220-227},
zbl = {0810.39008},
url = {http://dml.mathdoc.fr/item/GDZPPN00204112X}
}
Stetkaer, Henrik. D'Alembert's equation and spherical functions.. Aequationes mathematicae, Tome 47 (1994) pp. 220-227. http://gdmltest.u-ga.fr/item/GDZPPN00204112X/